How Many Protons, Neutrons And Electrons Are In 39K19+? - Vedantu

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AnswerQuestion Answers for Class 12Class 12 BiologyClass 12 ChemistryClass 12 EnglishClass 12 MathsClass 12 PhysicsClass 12 Social ScienceClass 12 Business StudiesClass 12 EconomicsQuestion Answers for Class 11Class 11 EconomicsClass 11 Computer ScienceClass 11 BiologyClass 11 ChemistryClass 11 EnglishClass 11 MathsClass 11 PhysicsClass 11 Social ScienceClass 11 AccountancyClass 11 Business StudiesQuestion Answers for Class 10Class 10 ScienceClass 10 EnglishClass 10 MathsClass 10 Social ScienceClass 10 General KnowledgeQuestion Answers for Class 9Class 9 General KnowledgeClass 9 ScienceClass 9 EnglishClass 9 MathsClass 9 Social ScienceQuestion Answers for Class 8Class 8 ScienceClass 8 EnglishClass 8 MathsClass 8 Social ScienceQuestion Answers for Class 7Class 7 ScienceClass 7 EnglishClass 7 MathsClass 7 Social ScienceQuestion Answers for Class 6Class 6 ScienceClass 6 EnglishClass 6 MathsClass 6 Social ScienceQuestion Answers for Class 5Class 5 ScienceClass 5 EnglishClass 5 MathsClass 5 Social ScienceQuestion Answers for Class 4Class 4 ScienceClass 4 EnglishClass 4 MathsHow many protons, neutrons and electrons are in $^{39}{{K}_{19}}^{+}$?AnswerVerified568.5k+ viewsHint: Potassium is a chemical element represented by the symbol $K$having atomic number 19. It is a silvery grey metal which is soft enough to cut with a knife. It reacts rapidly with oxygen present in the atmosphere so it is kept in water.Complete step by step answer:An atom is composed of proton and neutron whereas protons are positively charged molecules and neutrons are neutral in nature i.e. carries no charge and electrons which are negatively charged ions are revolving around the nucleus. Protons are represented by the symbol $p$, electrons are represented by $e$whereas neutrons are represented by the symbol $n$.The atomic number represents the number of protons and we know that atomic number of $K$i.e. potassium is 19, therefore number of protons in $^{39}{{K}_{19}}^{+}$ is 19. Number of neutrons can be calculated by subtracting the number of protons through its mass number. Mass number of potassium is 39, therefore the number of neutrons will be equal to $39-19=20$, hence number of neutrons in $^{39}{{K}_{19}}^{+}$is 20. Number of electrons is similar to the number of protons in a neutral atom but the given substance carries a positive charge which represents loss of electrons i.e. 1 electron is lost in this substance, therefore the number of electrons will be $19-1=18$.Hence, we can say that there are 19 protons, 20 neutrons and 18 electrons are present in $^{39}{{K}_{19}}^{+}$.Note: The mass of proton is taken as one unit and equals the mass of neutron, mass of neutron is also one unit and equals to the mass of protons whereas mass of electrons is about 1/2000 times the mass of hydrogen atom. Recently Updated PagesBasicity of sulphurous acid and sulphuric acid areMaster Class 11 Business Studies: Engaging Questions & Answers for SuccessMaster Class 11 Computer Science: Engaging Questions & Answers for SuccessMaster Class 11 Economics: Engaging Questions & Answers for SuccessMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Social Science: Engaging Questions & Answers for SuccessBasicity of sulphurous acid and sulphuric acid areMaster Class 11 Business Studies: Engaging Questions & Answers for SuccessMaster Class 11 Computer Science: Engaging Questions & Answers for SuccessMaster Class 11 Economics: Engaging Questions & Answers for SuccessMaster Class 12 English: Engaging Questions & Answers for SuccessMaster Class 12 Social Science: Engaging Questions & Answers for Success

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